Office chair



FIG. 1 is a front elevational view of an office chair showing our new design in one configuration;

FIG. 2 is a left side elevational view of the configuration as shown in FIG. 1;

FIG. 3 is a rear elevational view of the configuration as shown in FIG. 1;

FIG. 4 is a right side elevational view of the configuration as shown in FIG. 1;

FIG. 5 is a top plan view of the configuration as shown in FIG. 1;

FIG. 6 is a bottom plan view of the configuration as shown in FIG. 1;

FIG. 7 is a left front perspective view of the configuration as shown in FIG. 1;

FIG. 8 is a right front perspective view of the configuration as shown in FIG. 1;

FIG. 9 is a left rear perspective view of the configuration as shown in FIG. 1; and,

FIG. 10 is a right rear perspective view of the configuration as shown in FIG. 1.

The broken lines in the drawings illustrate environmental structure on the article and form no part of the claimed design. 

CLAIM The ornamental design for an office chair, as shown and described. 